Additionally, Tianen won two medals at the FIS Nordic World Ski Championships, a silver in 50 km (1966) and a bronze in the 4 × 10 km relay (1958).

For his successes, Tiainen earned the Holmenkollen medal in 1965 (Shared with Bengt Eriksson and Arne Larsen).

Arto Tiainen was a Social Democratic member of the Finnish Parliament from 22 January 1970 to 22 March 1970.

All results are sourced from the International Ski Federation (FIS).

This biographical article relating to Finnish cross-country skiing is a stub.